1. Marx, J.L., Science 178:46 (1972).
2. Jaeger, R.J., and R.J. Rubin, Ibid. 170:460 (1970).
3. Singh, A.R., W.H. Lawrence, and J. Autian, J. Pharm. Sci. 61:51 (1972).
4. Magram, A.B., “Flexible Vinyls and Human Safety,” Regional Technical Conference of the Society of Plastics Engineers, Inc., Kiamesha Lake, NY, March 1973, Society of Plastics Engineers, Inc., Greenwich, CT, p. 11.
5. Anonymous, Chem. Eng. News 50:14 (1972).